Results 141 to 150 of about 2,931 (177)
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Circularly polarized coherent anti-Stokes Raman scattering microscopy
Optics Letters, 2013We demonstrate circularly polarized coherent anti-Stokes Raman scattering (CP-CARS) microscopy that significantly suppresses the nonresonant background for high-contrast vibrational imaging. Circularly polarized pump and Stokes fields with opposite handedness are used to excite CARS signal.
Upputuri, P.K. +5 more
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Refractive effects in coherent anti-Stokes Raman scattering microscopy
Applied Optics, 2006Coherent anti-Stokes Raman scattering (CARS) microscopy with high sensitivity and high three- dimensional resolution has been developed for the vibrational imaging of chemical species. Due to the coherent nature of the CARS emission, it has been reported that the detection of epi-CARS and forward-CARS (F-CARS) signals depends on the size and shape of ...
Djaker, N. +4 more
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Applications of coherent anti-Stokes Raman scattering in silicon photonics
SPIE Proceedings, 2010In this invited paper, we first address the differences between the uses of coherent anti-Stokes Raman scattering (CARS) as light generating mechanism in Raman devices and as optical analysis tool in spectroscopy. Next, with respect to the light generating functionality of CARS, we briefly review the latest progress on CARS-based Raman wavelength ...
Vermeulen, Nathalie +2 more
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Dual-pump coherent anti-Stokes-Raman scattering microscopy
Optics Letters, 2006We introduce dual-pump coherent anti-Stokes-Raman scattering (dual-CARS) microscopy. This new technique permits simultaneous imaging of two species characterized by different molecular vibrations, as well as the removal of nonresonant background. This is achieved by using three synchronized laser pulses probing two different vibrations.
Ondrej, Burkacky +3 more
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Triple‐Resonance Coherent Anti‐Stokes Raman Scattering Microspectroscopy
ChemPhysChem, 2009AbstractFluorescence‐free microscopy: A new nonlinear optical microspectroscopy technique, femtosecond (fs) triple‐resonance coherent anti‐Stokes Raman scattering, in which the amplitude and phase of input fs laser pulses are optimally shaped to be in triple resonance with the molecular electronic and vibrational transitions, generates a coherent ...
Wei, Min +3 more
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Coherent Anti-Stokes Raman Scattering (CARS) Correlation Spectroscopy
ChemPhysChem, 2002KEYWORDS:CARS ¥ correlation spectroscopy ¥ diffusion ¥ microscopy ¥nonlinearopticsCorrelationtechniqueshavebeenwidelyappliedformonitoringsignalfluctuationsinadefinedobservationvolume.Thecauseofthefluctuationscaneitherbechangesinthenumberdensityofparticlesintheprobevolumeorchangesintheirspectroscopicproperties.Ingeneral ...
Thomas, Hellerer +3 more
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Coherent anti-Stokes Raman scattering from small volumes
Optics Letters, 1984We have used coherent anti-Stokes Raman scattering spectroscopy to resolve the Raman Q-branch line [Q (2) at 2987.18 cm(-1)] of dueterium gas contained in a 60-microm-diameter glass sphere. The 60-microm spheres contained only 10(+13) molecules at standard temperature and pressure; this made it possible to study gases that in larger quantities would be
E K, Gustafson, R L, Byer
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Elliptically polarized coherent anti-Stokes Raman scattering microscopy
Optics Letters, 2008We report an approach to coherent anti-Stokes Raman scattering (CARS) microscopy that significantly suppresses the nonresonant background for high-contrast vibrational imaging. We employ an elliptically polarized pump field with an aspect ratio of 1:3 of the ellipse combined with a linearly polarized Stokes field for elliptically polarized CARS (EP ...
Lu, F., Zheng, W., Huang, Z.
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Coherent Anti-Stokes Raman Scattering of Gases
1982The first measurements involving Coherent Anti-Stokes Raman Scattering (CARS) in gases were by Rado (1967) [1], who determined the nonresonant susceptibilities of a number of gases by using a ruby laser and a H2 Stokes beam stimulated in a high pressure hydrogen cell.
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